/* CSSVariantEngine v3.0 — zhishangdianjing.org.cn */
/* Palette: slate-blue | Radius: compact | Shadow: multi-layer gradient-tinted */
/* Spacing: dense | Transition: smooth long-ease */
/* Section layouts: {"news":"featured-left","features":"grid-4","hero":"centered","testimonials":"masonry","partners":"scroll","faq":"single-column","stats":"grid-3","cta":"card-style"} */

:root {
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-accent: #60a5fa;
    --color-surface: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --color-text: #f8fafc;
    --rgb-primary: 59, 130, 246;
    --rgb-accent: 96, 165, 250;
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --shadow-sm: 0 1px 3px rgba(59, 130, 246, 0.1), 0 1px 2px rgba(30, 41, 59, 0.08);
    --shadow-md: 0 4px 12px rgba(59, 130, 246, 0.15), 0 2px 6px rgba(30, 41, 59, 0.1);
    --shadow-lg: 0 10px 25px rgba(59, 130, 246, 0.2), 0 4px 12px rgba(30, 41, 59, 0.15);
    --space-section: 4rem;
    --space-card: 1.2rem;
    --space-gap: 0.875rem;
    --transition: 0.55s cubic-bezier(0.22, 0.1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
    accent-color: var(--color-primary);
    caret-color: var(--color-primary);
}

/* 基础覆盖 */
body { background: var(--color-surface); color: var(--color-text); line-height: var(--body-line-height); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { background: #ffffff; color: #1e293b; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); }

/* ========== Section Layout Variants ========== */

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 18s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: card-style */
.cta-inner { background: radial-gradient(circle at 20% 20%, #3b82f6, #2563eb 50%, #1d4ed8 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; }

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #0f172a 0%, #1e293b 35%, #3b82f6 75%, #93c5fd 100%); }
.card { border-left: 3px solid transparent; border-image: linear-gradient(180deg, #3b82f6, #60a5fa, #93c5fd) 1 stretch; }
header, .header, .navbar { background: #ffffff; box-shadow: 0 2px 10px rgba(59, 130, 246, 0.12), 0 1px 4px rgba(0, 0, 0, 0.1); }

/* Responsive */
@media (max-width: 1024px) {
    .news-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .feature-list { grid-template-columns: repeat(2, 1fr) !important; }
    .partner-grid { grid-template-columns: repeat(3, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .hero-inner { grid-template-columns: 1fr !important; }
}
@media (max-width: 640px) {
    :root { --space-section: 2rem; --space-card: 0.875rem; --space-gap: 0.5rem; }
    .news-grid { grid-template-columns: 1fr !important; }
    .feature-list { grid-template-columns: 1fr !important; }
    .faq-list { grid-template-columns: 1fr !important; }
    .testimonial-list { column-count: 1 !important; }
    .partner-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .cta-inner { grid-template-columns: 1fr !important; }
}